diff options
Diffstat (limited to 'bsps/arm/gumstix/include/ffuart.h')
| -rw-r--r-- | bsps/arm/gumstix/include/ffuart.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/bsps/arm/gumstix/include/ffuart.h b/bsps/arm/gumstix/include/ffuart.h new file mode 100644 index 0000000000..68df822183 --- /dev/null +++ b/bsps/arm/gumstix/include/ffuart.h @@ -0,0 +1,48 @@ +/* + * FFUART for PXA250 CPU by Yang Xi<hiyangxi@gmail.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#ifndef __FFUART_H__ +#define __FFUART_H__ + +typedef struct { + /* + *Receive buffer(DLAB=0).Transmit buffer(DLAB=0). + *Divisor Latch Low(DLAB=1) + */ + volatile unsigned int rbr; + /*Interrupt enable(DLAB=0). Divisor Latch High(DLAB=1)*/ + volatile unsigned int ier; + /*Interrupt identification.FIFO control*/ + volatile unsigned int iir; + /*Line Control*/ + volatile unsigned int lcr; + /*Modem control*/ + volatile unsigned int mcr; + /*Line Status*/ + volatile unsigned int lsr; + /*Modem status*/ + volatile unsigned int msr; + /*Scratch Pad*/ + volatile unsigned int spr; + /*Infrared Selection*/ + volatile unsigned int isr; +} ffuart_reg_t; + + +#define EIGHT_BITS_NOPARITY_1STOPBIT 0x3 +#define DLAB 0x80 + + +/*Divisor = frequency_uart/(16 * BaudRate*)*/ +#define FREQUENCY_UART (14745600) + +#define SEND_EMPTY 0x20 +#define FULL_RECEIVE 0x01 + +#endif + |